89 results about "Corrosion reaction" patented technology

The invention discloses a method for controlling CMP (chemical mechanical polishing) dish-shaped pits, corrosion pits and interface corrosion of ruthenium barrier layer copper wiring, which is suitable for a manufacturing process of integrated circuits of 14 nanometers and below. According to the method, a specifically synthesized TTAK corrosion inhibitor is introduced into a polishing solution system, the oriented adsorption characteristic of the molecular structure of the TTAK corrosion inhibitor is utilized, the corrosion reaction of copper is selectively inhibited, meanwhile, the normal material removal efficiency of a ruthenium barrier layer and a TEOS dielectric layer is maintained, and cooperative regulation and control of the removal rate of the Cu / Ru / TEOS material are achieved. By means of the method, dished pits, corrosion pits and Fang type interface defects generated in the fine polishing and barrier layer polishing process can be effectively eliminated, and copper / ruthenium interface corrosion is improved. According to the method, the global planarization quality of the copper interconnection ruthenium barrier layer is remarkably improved, the interface bonding strength and the electrical reliability of an interconnection circuit are enhanced, and an effective solution is provided for performance optimization of an advanced process integrated circuit device.

The invention discloses a metal stack cavity header tube region polar plate anti-corrosion structure and an applied stack thereof. The stack comprises a plurality of groups of stacked metal bipolar plates, wherein a corrosion sacrifice structure is arranged on the metal bipolar plate on the high-voltage side of a fuel cell stack close to the liquid outlet side of a circulation cavity in an extending manner along a second direction; according to the corrosion sacrifice structure, the overlapped edge area of the metal bipolar plate and the insulating sealing gasket can be subjected to electrochemical corrosion preferentially, corrosion of the interior of a galvanic pile to a polar plate material is reduced and avoided, a corrosion reaction can occur preferentially in a designed corrosion area, and on the premise that the material cost is not increased and the design compactness is not sacrificed, the service life of the galvanic pile is prolonged. The discharge area can be effectively increased, corrosion current can be intercepted in advance, the corrosion resistance of the metal bipolar plate is effectively improved, the highest potential and the reaction active area of the adjacent power generation unit are protected, and the service life of the fuel cell stack is remarkably prolonged.

The application provides high-strength spherical activated carbon and a preparation method thereof; on one hand, sulfuric acid and a promoter system are used, over-sulfuric acid (H2SO5) is generated by the reaction of the sulfuric acid and the promoter, the oxidizability of the system is significantly enhanced in a short time, and the system has certain acidity, so that the removal of -H is realized on the basis of protection of the main chain structure of a polymer; on the other hand, iron ions are added, the corrosion to a reaction container can be inhibited, the reaction condition is mild, the material requirement of the reaction container is relatively low, and meanwhile, the yield and the strength of the spherical activated carbon are improved.

The invention relates to the technical field of metal surface treatment process auxiliary equipment, and discloses a method for prolonging the service life of a loading hanger for a special polishing and washing process, which comprises the following steps: S1, a spray gun nozzle is matched with carborundum to carry out sand blasting treatment on the hanger; s2, an alkali washing degreasing agent is matched with ultrasonic power cleaning equipment for cleaning; s3, the hanging tool is put into an oven to be heated step by step, and a Teflon powder material is evenly sprayed and attached to the surface of the hanging tool from top to bottom through a spray gun; s4, after spraying is completed, the hanging tool is moved into a constant-temperature oven, the temperature is set, constant-temperature curing is conducted, and then heating is stopped till the hanging tool is naturally cooled to the normal temperature; the titanium alloy hanger base body and the Teflon protection layer are used in cooperation, hydrofluoric acid corrosion resistance and high temperature resistance of Teflon are utilized, a compact protection film is formed on the surface of the hanger, and passive film damage and metal corrosion reaction are avoided; and meanwhile, the binding force of the protective layer and the base body is improved through the sand blasting roughening process, and the service life of the hanger is prolonged.

The utility model discloses an electrochemical test experimental device for boiling nitric acid corrosion in a high-temperature reduced-pressure environment, which relates to the technical field of electrochemical test and consists of a reduced-pressure boiling corrosion reaction system, an electrochemical test system, a heating system, an acid gas absorbing and drying system, a vacuum degree control system and an automatic integrated control system. The decompression boiling corrosion reaction system is connected with the acid gas absorption and drying system, the vacuum degree control system and the heating system are respectively connected with the acid gas absorption and drying system and are in contact with the decompression boiling corrosion reaction system, and an automatic integrated control system is adopted to control the experimental device. The experimental device disclosed by the utility model can test and simulate the electrochemical corrosion behavior of high-temperature reduced-pressure boiling nitric acid in the environment of the evaporator for spent fuel post-treatment, and can realize weight loss and electrochemical test of various materials under the condition of reduced-pressure boiling strong corrosive solution at the same time.

This invention discloses a high-temperature liquid sodium-metal oxidation corrosion experimental system, relating to the field of corrosion resistance testing devices. It includes an experimental body, a gas path system, a heating coil, multiple thermocouples, a controller, and a DC power supply. The experimental body comprises a pressure-holding container, multiple independent sample containers, and a positioning disk. Each sample container consists of hollow bolts, nuts, annular gaskets, and a wire mesh wick. The metal sample is placed on the wire mesh wick. The gas path system is connected to the pressure-holding container. The heating coil is wound around the outer surface of the pressure-holding container, and the thermocouples are inserted into the pressure-holding container. The controller is connected to both the thermocouples and the DC power supply, which is also connected to the heating coil. The wire mesh wick, metal samples, and sample containers are made of the same material, thus avoiding interference with the corrosion reaction of the metal samples. The sample containers are independent, and different metal samples do not affect each other. Combining different oxygen contents, metal samples, and wire mesh wick mesh sizes allows for the acquisition of richer experimental data in a single operation.

The invention relates to the technical field of water electrolysis hydrogen production, in particular to an oxygen evolution catalyst and a preparation method and application thereof. The preparation method of the oxygen evolution catalyst comprises the following steps: dissolving metal salt in deionized water to prepare a precursor metal solution; immersing the foam metal substrate into the precursor metal solution, carrying out corrosion reaction in an oxygen-containing atmosphere, forming a nickel-cobalt-iron layered hydroxide nanosheet on the foam metal substrate, and preparing an oxygen evolution catalyst; wherein the metal salt comprises two of nickel salt, cobalt salt and iron salt; the foam metal substrate comprises one of a foam nickel substrate, a foam cobalt substrate and a foam iron substrate; metal elements contained in the metal salt are different from metal elements contained in the foam metal substrate. The preparation method of the oxygen evolution catalyst provided by the invention is simple in process and low in raw material cost, and the prepared oxygen evolution catalyst has relatively high oxygen evolution reaction activity and stability.

The invention discloses a preparation method and application of a zinc negative electrode of a pre-corrosion in-situ modified water-based zinc ion battery, and provides the water-based zinc ion battery at the same time. The zinc negative electrode of the pre-corrosion modified aqueous zinc ion battery is one of a pre-corrosion in-situ zinc tungstate composite zinc electrode (ZnWO), a pre-corrosion in-situ zinc molybdate composite zinc electrode (ZnMoO), a pre-corrosion in-situ zinc vanadate composite zinc electrode (ZnVO) and a pre-corrosion in-situ zinc silicate composite zinc electrode (ZnSiO). The application of the corrosion reaction on the surface of the metal zinc negative electrode is discussed for the first time, the corrosion reaction on the surface of zinc is utilized to form the corresponding compact, multifunctional, stable and insoluble pre-corrosion in-situ zinc salt composite zinc electrode, various side reactions are relieved, uniform zinc deposition is guaranteed, the zinc is not prone to falling off in the repeated zinc deposition stripping process, and the service life of the zinc electrode is prolonged. And finally, stable and long-acting application of the aqueous zinc ion battery is realized.

This application discloses an electrode structure, a battery cell, and a battery. The electrode structure includes a current collector, a first coating layer, and a second coating layer. Along the thickness direction of the current collector, the first coating layer is disposed on at least one side of the current collector; and along the thickness direction of the current collector, the second coating layer and the first coating layer are located on the same side. Along the width direction of the current collector, the second coating layer is disposed on at least one side of the first coating layer. The static voltage of the second coating layer is lower than the static voltage of the first coating layer. In the electrode structure of this application embodiment, the static voltage of the second coating layer is lower than the static voltage of the first coating layer, thus reducing the oxidation potential at the interface between the active material and the tab, reducing the oxidation potential at the interface between the active material and the tab (enriched electrolyte), thereby greatly reducing the corrosion reaction rate, reducing the risk of corrosion fracture at the interface between the positive electrode active material and the tab, and improving the cycle performance of the battery.

The application discloses a kind of theoretical model for evaluating pipeline steel macro-battery corrosion under elastic-plastic deformation, the theoretical model includes following physical field and coupling mechanism thereof: physical field: (1) stress-strain field: the elastic-plastic mechanics constitutive model based on von Mises yield criterion and isotropic hardening criterion is used to characterize the mechanical behavior of pipeline steel;(2) electrochemical field: the electrode kinetics model based on Tafel equation is used to characterize the corrosion reaction kinetics process on the surface of pipeline steel;Coupling mechanism: the mechanical-electrochemical double-path coupling mechanism for characterizing macro-battery corrosion.The model realizes the quantitative description of the macro-battery corrosion behavior induced by elastic-plastic deformation by coupling the mechanical deformation and electrochemical corrosion process of the material.The application realizes the two-way interaction of stress-strain field and electrochemical field under the background of macro-battery corrosion, and can quantitatively reveal the regulation of deformation on the intensity and evolution process of macro-battery corrosion.

This disclosure provides a solar cell, a semi-finished cell, and a fabrication method thereof, belonging to the field of solar cell technology. The semi-finished cell includes a cell body and a porous silicon layer serving as a texturing precursor. The porous silicon layer is disposed at least on the front surface of the cell body, with a porosity of 30%–70% and an average pore depth of 50 nm–500 nm. By preparing a porous silicon layer at least on the front surface of the cell body, this disclosure provides numerous and uniform nucleation sites for subsequent alkaline texturing. In an alkaline solution, the corrosion reaction preferentially begins from the pore edges, guiding the uniform and dense growth of the pyramid texture. Furthermore, the porous silicon layer serves as an effective anti-reflection structure, forming a dual anti-reflection effect with the subsequently formed pyramid textured surface, reducing reflection. In addition, the uniform textured surface further formed from the porous silicon layer has lower surface recombination, which is beneficial for improving minority carrier lifetime and increasing cell efficiency.

The invention relates to a self-repairing anticorrosive coating, a preparation method thereof, a photovoltaic module and a frame thereof. According to the self-repairing anticorrosive paint and the preparation method thereof, a specific amount of the solvent, the repairing agent nanometer container and the curing agent are added into the film-forming resin, the repairing agent is a heterocyclic compound capable of being subjected to coordination reaction with metal ions, heteroatoms of the heterocyclic compound comprise at least one of N, S and O, the nanometer container serves as a carrier of the repairing agent, and the curing agent is a curing agent. When corrosive media such as water molecules permeate into the surface of the frame to cause local corrosion, the repairing agent diffuses out of the nanometer container at the invasion position of the corrosive media and is subjected to coordination reaction with metal ions generated by corrosion reaction to form a new local protection film, and further diffusion of corrosion is limited. In addition, migration of metal ions can be well limited through the coordination effect, and then the effect of controlling PID effect deterioration is achieved. Therefore, the stability and the long-term effect of the frame and the assembly in severe environments such as high humidity and high salt can be improved.

The utility model provides a kind of corrosion-resistant EPS reaction kettle feeding device, it is related to feeding equipment technical field, including the feeding assembly of being set on the upper end of reaction kettle main body, feeding assembly is provided with multiple groups, the feeding assembly of multiple groups is evenly encircling distribution about the outer wall of reaction kettle main body, cavity of outer frame is equipped with electric push rod, the output end shaft of electric push rod is connected with storage tank, one end of storage tank is rested on the upper wall of reaction kettle main body, according to production formula, different kinds of raw materials are respectively connected in multiple feeding assemblies encircling distribution in the outer wall of reaction kettle main body, multiple feeding assemblies can ensure that multiple raw materials can be simultaneously fed, drive electric push rod, electric push rod converts electric energy into mechanical energy, according to preset program, its output end does linear extension and contraction motion, when electric push rod lengthens, drives the one end of storage tank connected with its shaft to elevate, so that storage tank is in inclined state, with the inclination of storage tank, internal raw materials flow to discharge port under the action of gravity, realize the purpose of synchronous feeding.

The invention relates to the technical field of aqueous zinc ion batteries, in particular to a negative electrode material for a zinc ion battery, a preparation method of the negative electrode material, an electrode and the zinc ion battery. The preparation method of the negative electrode material for the zinc ion battery comprises the following steps: 1) soaking zinc powder in a first treatment solution for 0.5-2 hours, carrying out solid-liquid separation, and drying to obtain pretreated zinc powder; the temperature of the first treatment liquid is 0-25 DEG C; the first treatment liquid comprises a polymerization initiator and a first solvent; and 2) soaking the pretreated zinc powder in a second treatment solution for 0-2 hours or spraying a second treatment solution on the surface of the pretreated zinc powder, then reacting, carrying out solid-liquid separation, drying, and forming a functional layer on the surface of the pretreated zinc powder, the second treating fluid comprises a pyrrole monomer and a second solvent. The negative electrode material prepared by the preparation method disclosed by the invention can inhibit corrosion reaction and reduce hydrogen evolution reaction, improve the cycling stability of the zinc ion battery and prolong the service life of the zinc ion battery.

The invention belongs to the technical field of copper foil production, and particularly relates to a preparation method and device of a galvanic effect-resistant copper foil with highly-enriched active metal on the surface, and the preparation method comprises the following steps: carrying out cathode electroplating thickening on a raw material copper smooth surface by using an electroplating electrolytic solution, and forming an electroplating thickening layer on the surface of the raw material copper smooth surface; and performing active metal ion electroplating on the rough surface of the raw copper by using an active metal mixed solution to form a surface activation layer on the rough surface of the raw copper. According to the preparation method of the anti-galvanic-effect copper foil with the highly-enriched active metal on the surface, an electroplating thickening layer can be formed on the smooth surface of the raw copper, and a surface activation layer can be formed on the rough surface of the raw copper; therefore, the problem that galvanic corrosion reaction is easy to occur at the bottom of the copper foil due to the reaction of the existing copper foil and silver ions is solved, and the micro short circuit hazard of PCB circuit burrs or burr bridging caused by corrosion is effectively avoided.

The invention discloses a crevice corrosion and flash corrosion resisting liquid medicine for an MSAP process and a using method of the crevice corrosion and flash corrosion resisting liquid medicine. The flash etching liquid medicine comprises 40-60 g / l of sulfuric acid, 20-30 g / l of hydrogen peroxide, 0.5-2.0 g / l of a stabilizer, 2.0-5.0 g / l of hyperbranched polyol, 0.1-0.5 g / l of tungstate, 0.02-0.04 g / l of a wetting agent and the balance of water. The number-average molecular weight of the hyperbranched polyol is 500 to 1200, and the hydroxyl value of the hyperbranched polyol is 500 to 700 mKOH / g. Through the synergistic effect of the hyperbranched polyol and the tungstate, the corrosion reaction in the included angle gap is effectively inhibited, the bottom lateral erosion amount can be controlled within 0.5 [mu] m, the problem of accelerated lateral erosion caused by the included angle gap in the IC carrier plate MSAP process is solved, and the processing requirement of a high-end IC carrier plate for a fine circuit is met.

This invention relates to metal protective coating material technology, aiming to provide a method for preparing BTA-ZIF-8@Ce-MMT nanocomposite powder supported by dual corrosion inhibitors. MMT particles, after ball milling, are ultrasonically dispersed in water, and the supernatant is collected after natural sedimentation. Cerium nitrate hexahydrate and an appropriate amount of deionized water are added, and the mixture is reacted at 25°C with stirring for 24 hours. Zinc nitrate hexahydrate is then added and stirred until completely dissolved. A mixed solution of benzotriazole (BTA), 2-methylimidazole, and anhydrous ethanol is then added, and the mixture is reacted at 25°C with stirring for 12 hours. The reaction solution is centrifuged, and the precipitate is washed and dried to obtain the nanocomposite powder. This product can simultaneously inhibit corrosion in both the anodic and cathodic regions of the corrosion reaction micro-zone, further improving the active protection effect. The reaction only requires room temperature conditions, simplifying the synthesis process. The powder exhibits good dispersibility in water-based epoxy coatings and is not prone to agglomeration. This method reduces preparation costs and broadens the application range of rare earth elements.

The present application relates to the technical field of artificial rutile, and particularly discloses a method for improving the efficiency and purity of artificial rutile produced by reducing ilmenite corrosion, which comprises the following steps: preparing a corrosion solution by mixing hydrochloric acid and industrial water, and then injecting the corrosion solution into a stirring corrosion tank; adding a catalyst into the stirring corrosion tank according to a set proportion; adding reduced ilmenite into the stirring corrosion tank, and simultaneously performing aeration by using a Roots blower to generate a hydration iron oxide and an artificial rutile slurry; and separating the hydration iron oxide and the artificial rutile slurry to obtain the artificial rutile. In the method for improving the efficiency and purity of artificial rutile produced by reducing ilmenite corrosion, the corrosion reaction is quickly and effectively performed by adding the catalyst, the corrosion reaction time is greatly shortened, the production efficiency is improved, and the energy consumption cost is saved; meanwhile, the catalyst, the corrosion solution and the washing solution can be recycled, the chemical reagent cost is saved, and the pollution to the environment is reduced.

The application provides a spent fuel reprocessing high-temperature nitric acid full stress corrosion simulation experiment device, and relates to the technical field of spent fuel reprocessing. The device comprises an electric control system and a load loading system, a corrosion reaction system, an electrochemical test system, a temperature control system and a tail gas treatment system connected with the electric control system. The load loading system is used for loading various loads. The corrosion reaction system is composed of a glass reaction tank and a reaction tank cover. The reaction tank contains nitric acid solution for corrosion reaction of the sample. The sample penetrates the glass reaction tank and is sealed by a sealing kit. The electrochemical test system is arranged in the reaction tank cover and used for electrochemical test of the sample corrosion reaction. The temperature control system is used for adjusting and controlling the temperature of the sample corrosion reaction of the load loading system. The tail gas treatment system realizes treatment of the tail gas generated in the sample corrosion process. The device solves the problem that the stress corrosion test under high-temperature nitric acid cannot be carried out at present.

The invention discloses a process method for producing zinc oxide by recovering zinc from waste galvanized steel sheets. The process method comprises the following steps: step 01, carrying out corrosion reaction on galvanized steel sheet wastes and acid liquor; 02, reacting the liquid with a hydrogen peroxide solution; step 03, injecting a sodium hydroxide solution into the liquid; step 04, filtering the liquid to obtain a ferric hydroxide flocculate precipitate; and step 05, filtering impurities in selective chelating adsorption resin to obtain a zinc-containing solution. Step 06, adding a sodium hydroxide solution into the zinc-containing solution to obtain a sodium metazincate solution; step 07, filtering the sodium metazincate solution, and introducing carbon dioxide gas into the obtained filtrate to obtain a sodium bicarbonate solution; and step 08, carrying out centrifugal separation on the solution, and calcining the obtained solid to obtain zinc oxide. According to the method, the zinc is effectively extracted by adopting the waste galvanized steel as the raw material, and the economic benefit of treating the waste galvanized steel is improved.

The invention discloses a magnesium alloy with good corrosion resistance and a preparation method thereof, and the magnesium alloy comprises the following components in percentage by mass: 97.5%-99.0% of magnesium, 0.5%-1.5% of manganese, 0.3%-0.8% of germanium, 0.2%-0.6% of zinc and 0.01%-0.1% of calcium. According to the magnesium alloy, through reasonable proportioning of magnesium, manganese, germanium, zinc and calcium, a fine and stable intermetallic compound and a high-stability second phase are formed, a grain boundary is purified, a solid solution is strengthened, a corrosion reaction is synergistically inhibited, and the hydrogen embrittlement risk is relieved, so that the alloy has excellent corrosion resistance in humid, salt mist, high-temperature and other environments, meanwhile, the mechanical property is guaranteed, and the service life of the alloy is prolonged. The service life is prolonged.

The application discloses acetyl urea used as an electrolyte additive of a water-based zinc ion battery in a low-temperature domain. Due to the direct connection of carbonyl and amino groups in acetyl urea, the binding energy of the O atom in the carbonyl and zinc ions is large, which can replace part of the water molecules in the solvent sheath structure of zinc ions, and reduce the number of water molecules in the solvent sheath structure of zinc ions; at the same time, a solid electrolyte interface layer SEI is generated in situ on the surface of the zinc negative electrode tip, the SEI layer inhibits the continuous growth of the zinc tip into zinc dendrites, and prevents the contact of water molecules with the surface of the Zn negative electrode, thereby effectively inhibiting the hydrogen evolution reaction and corrosion reaction on the zinc surface, so as to adapt to the charging and discharging process under low-temperature conditions. The application solves the problems of dendrites, hydrogen evolution and corrosion of the negative electrode of the current water-based zinc ion battery by a safe and low-cost method, and obtains a high-performance water-based zinc battery, which can help the development of zinc batteries with low cost and high performance, and greatly promotes the commercial application process of the water-based zinc battery.

The present application relates to supercritical water reaction technical field, provide a kind of organic waste liquid inorganic reaction and desalination integration device, inner body is arranged in the inside of outer body, and first gap is left between inner body and outer body;Particle discharge device is connected with inner body and the outside of body;The inside of inner body is provided with outer water pipe and inner water pipe, and length is less than the length of inner body, second gap is left between outer water pipe and inner body, third gap is left between inner water pipe and outer water pipe, and the bottom of inner water pipe and outer water pipe is provided with corrosion-resistant plate;Inner body is provided with reactant inlet and reactant outlet;Outer body is provided with cooling water inlet and cooling water outlet.The present application can avoid salt precipitation to plug and corrode reactor and pipeline and equipment in rear end, reduce reactor cleaning salt and maintenance frequency, prolong the service life of main equipment to ensure the continuous and stable operation of supercritical water reactor, and then increase the processing efficiency of organic waste liquid.

The utility model belongs to the corrosion test technical field, concretely is a kind of multifunctional molten salt corrosion test system, it mainly includes corrosion reation kettle and molten salt buffer tank, several fixed clamping grooves are arranged in the corrosion reation kettle, several fixed clamping grooves are installed on lower flow guide plate, operating hole is arranged in the corrosion reation kettle top, and the both ends of corrosion reation kettle are connected with circulating pipeline by flange;The utility model is by miniature industrial circulating pump, and high-temperature molten salt medium in molten salt buffer tank is transported to corrosion reation kettle, and the test piece on the fixed clamping groove fixed in corrosion reation kettle is formed scouring.Corrosion reation kettle is the main reaction device of the present test system, and corrosion reation kettle is connected with external circulating pipeline by flange, and it is convenient to disassemble.

The utility model relates to the technical field of anti-corrosion reactors, in particular to a pre-reactor barrel, which comprises an outer barrel, an inner barrel and an inner barrel, the first end plate and the second end plate are symmetrically fixed to the two sides of the outer cylinder, and the inner diameter of the first end plate and the inner diameter of the second end plate are equal to the inner diameter of the outer cylinder; and the inner cylinder is arranged in a hollow penetrating mode, coaxially arranged on the inner side of the outer cylinder and attached to the outer cylinder, the two ends of the inner cylinder extend to the outer side of the first end plate and the outer side of the second end plate correspondingly, and the inner cylinder is made of a polytetrafluoroethylene material. According to the pre-reactor cylinder disclosed by the utility model, the outer cylinder and the inner cylinder are combined, and the inner cylinder is made of the polytetrafluoroethylene material, so that the cost of a roller can be reduced to be less than one fifth of the manufacturing cost of hastelloy, and the aims of meeting the reaction requirements and reducing the cost are fulfilled.

The invention discloses an etchant solution for a doped structure of a medium-low voltage MOS device, and relates to the technical field of semiconductors. Comprising chromic acid solution, hydrofluoric acid and nitric acid; x is the volume of hydrofluoric acid, y is the volume of the chromic acid solution, z is the volume of nitric acid, and the unit is mL; the ratio of x to y to z is (1: 1: 6)-(1: 1: 10). Chromic acid and HF further react to generate dichromic acid with higher oxidability, and the dichromic acid directly reacts with silicon, so that a highly-doped N-type region has a higher reaction rate, and the region is preferentially corroded to form a recess; the nitric acid oxidizes the silicon surface to generate a layer of ultra-thin silicon dioxide film, and the hydrofluoric acid efficiently dissolves the SiOO film generated by oxidation of the nitric acid, so that the pure silicon surface below is exposed, the pure silicon surface can be oxidized again, and the P-type region and the low-doped N-type region are circularly corroded. While the boundary of each doped region is ensured to be clearly displayed, the overall corrosion reaction time is effectively shortened, a fine device structure is protected from being excessively damaged in the process, and the process analysis efficiency is greatly improved.

This invention discloses a corrosion-resistant water pump housing, comprising a pump housing, a button battery, a battery compartment, a current control module, and electrode strips. The pump housing has an outer surface and an internal cavity. The battery compartment holds at least one button battery. The current control module stably outputs current, driving the electrode strips to release electrons, forming cathodic protection and inhibiting corrosion on the pump housing surface. The battery compartment and sealing cover are designed to be waterproof, ensuring the battery and circuitry are protected from moisture or corrosive liquids. The current control module automatically adjusts the current output based on battery voltage changes, ensuring stable system operation. This invention, through stable current output and the cathodic protection of the electrode strips, effectively improves the corrosion resistance of the pump housing, extends the service life of the pump, and reduces maintenance frequency and costs.

The invention discloses a method for constructing a ternary gas impurity control threshold model in a high-temperature inert environment, which comprises the following steps of: analyzing the types of impurity corrosion reactions possibly occurring in a material, and establishing a single impurity and temperature two-dimensional critical partial pressure map; the impurity partial pressure is changed under the equal total pressure, and dominant corrosion reaction types of different ratio combinations are determined; selecting a representative impurity gas proportion point in the dominant reaction area, performing high-temperature corrosion reaction on the material, and analyzing an actual dominant corrosion reaction type; carrying out normalization processing on theoretical and actual dominant corrosion reactions, and constructing a ternary impurity ratio and corrosion reaction type response model; and setting a failure critical condition, and obtaining a ternary impurity control threshold model by taking a corrosion reaction type as a criterion. According to the method, the critical partial pressure relation of an oxidation-carbonization-volatilization-stability region is defined through the influence rule of different impurity combinations on the type, thickness and diffusion depth of corrosion products on the surface of refractory alloy, and the method can be used for calculating the key impurity control threshold value of the high-temperature alloy material.

The invention discloses an aqueous zinc metal battery electrolyte and a zinc metal battery, and belongs to the technical field of batteries, the aqueous zinc metal battery electrolyte comprises L-pyroglutamic acid, zinc salt and water, and the concentration of the L-pyroglutamic acid in the aqueous zinc metal battery electrolyte is 0.01-0.5 mol / L. According to the water-based zinc metal battery electrolyte disclosed by the invention, the L-pyroglutamic acid with a specific concentration is added, and after the L-pyroglutamic acid is introduced into the water-based zinc metal battery electrolyte, the L-pyroglutamic acid has the functions of reconstructing a hydrogen bond network and creating a strong acid environment; the three problems of hydrogen evolution side reaction, corrosion reaction and zinc dendrite growth at a zinc negative electrode-electrolyte interface can be solved, and the specific capacity, coulombic efficiency and cycle life of the zinc metal battery are effectively improved.